<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box{
            width: 900px;
            height: 300px;
            background: yellow;
            margin: 0 auto;
        }
        .box div{
            width: 300px;
            height: 300px;
            float: left;
            text-align: center;
            padding: 10px;
            box-sizing: border-box;
            /* 怪异盒模型，挤压原来的内容 */
        }
    </style>
</head>
<body>
    <div class="box">
        <div>Lorem ipsum dolor sit amet consectetur adipisicing elit. Quasi, tenetur fugiat. Blanditiis minus accusantium repellat id labore et eos quidem. Culpa quod quasi eum voluptates vitae amet sequi tempore quos.</div>
        <div>Lorem ipsum dolor sit amet consectetur adipisicing elit. Quasi, tenetur fugiat. Blanditiis minus accusantium repellat id labore et eos quidem. Culpa quod quasi eum voluptates vitae amet sequi tempore quos.</div>
        <div>Lorem ipsum dolor sit amet consectetur adipisicing elit. Quasi, tenetur fugiat. Blanditiis minus accusantium repellat id labore et eos quidem. Culpa quod quasi eum voluptates vitae amet sequi tempore quos.</div>
    </div>
</body>
</html>